The MAX3190/MAX3190E single RS-232 transmitters are designed for applications with limited space and cost that require minimal RS-232 communications. These devices consume only 200µA of supply current from ±7.5V to ±12V supplies. The MAX3190/MAX3190E transmitter outputs are RS-232 compatible when powered from ±6V to ±7.5V supplies. They feature a shutdown input that reduces current consumption to only 1µA and forces the transmitter output into a high-impedance state. RS-232-compliant data transmission is guaranteed up to 460kbps. The MAX3190/MAX3190E are EIA/TIA-232 transmitters that convert CMOS/TTL logic levels to RS-232-compliant signals. The MAX3190E transmitter output is protected to ±15kV per the Human Body Model, ±8kV per IEC 1000-4-2 Contact Discharge, and ±15kV per IEC 1000-4-2 Air-Gap Discharge, providing protection against harsh environments. The MAX3190/ MAX3190E transmitters have a standard inverting output.
The MAX3190 and MAX3190E are single‑channel RS‑232 transmitters designed for space‑ and cost‑constrained applications. They operate from ±7.5 V to ±12 V supplies, draw only 200 µA of supply current, and provide RS‑232‑compatible outputs up to 460 kbps. The MAX3190E version adds enhanced ESD protection.
The devices feature an active‑low shutdown input that reduces supply current to 0.4 µA and places the output in a high‑impedance state, allowing other transmitters to share the line. They are supplied in a 6‑pin SOT23‑6 package and are rated for operation from –40 °C to +85 °C.
| Supply Voltage Range | ±7.5 V to ±12 V |
|---|---|
| Operating Supply Current | 200 µA |
| Shutdown Supply Current | 0.4 µA |
| Maximum Data Rate | 460 kbps |
| ESD Protection (MAX3190E) | ±15 kV HBM, ±8 kV Contact, ±15 kV Air‑Gap |
| Operating Temperature Range | -40 °C to +85 °C |
The devices guarantee RS‑232‑compatible data transmission up to 460 kbps.
When the SHDN pin is driven low, the supply current drops to about 0.4 µA.
The MAX3190E output is protected to ±15 kV (Human Body Model), ±8 kV (IEC 1000‑4‑2 Contact Discharge) and ±15 kV (IEC 1000‑4‑2 Air‑Gap).